I consider it an enormously antiquated idea to bind nations to a piece of land. We should try to arrive at a more abstract definition. And yes, of such nations we need many more.
you might enjoy doctorow's "eastern standard tribe", which, while not one of his better books, had some nice ideas. the premise was that the kind of people who spent large amounts of their time hanging out online would coalesce into tribes based around timezones, and that the timezone you were physically living in would not necessarily correspond to the tribe you belonged to and arranged your waking hours to match.